Index: branches/RC/core/admin_templates/js/script.js
===================================================================
diff -u -N -r11931 -r11932
--- branches/RC/core/admin_templates/js/script.js	(.../script.js)	(revision 11931)
+++ branches/RC/core/admin_templates/js/script.js	(.../script.js)	(revision 11932)
@@ -1492,8 +1492,8 @@
 	}
 	padding = [parseInt(style.paddingTop), parseInt(style.paddingRight), parseInt(style.paddingBottom), parseInt(style.paddingLeft)]
 	border = [parseInt(style.borderTopWidth), parseInt(style.borderRightWidth), parseInt(style.borderBottomWidth), parseInt(style.borderLeftWidth)]
-	for (var i in padding)  if ( isNaN( padding[i] ) ) padding[i] = 0
-	for (var i in border)  if ( isNaN( border[i] ) ) border[i] = 0
+	for (var i = 0; i < padding.length; i++)  if ( isNaN( padding[i] ) ) padding[i] = 0
+	for (var i = 0; i < border.length; i++)  if ( isNaN( border[i] ) ) border[i] = 0
 
 	var result = new Object();
 	result.innerHeight = obj.clientHeight - padding[0] - padding[2];